Method of manufacturing dentures



- A. STROE METHOD OF'MANUFACTURING DENTURES Sept. 2, 1930.,

Filed May 8, 1929 Patented Sept. 2 1930f I f JTAMBBOSE F I IRQEQ F CL VEA D; oH-IQ "mn'rnon on iv'r'Anpraoronr-n YDENTURES mplication filerl lltay 8,1929. 'seriai noiscnioai invention relatesto a methodofufacturing dentures, and more particularly; to; amethod of manufacturingvnlcanitezden-j i ,tures.

5' v lhe main object .of

vide a method of manufacturing the palate of all upper palate so as tocurate contour ture of a desired; greater thickness, which dentures willnot be Warped in the process of manufacture.

I Another object of'the invention pro-v vide a method of manufacturingdentures of said character,.which will save bothtime'and material.

the invention will" be hereinafterfully' de scribed with reference todrawings, and the novel will be distinctly pointed out-in the append edclaims.

In the several views of'thedrawings, simi out out, Fig. 4 I 85 cisionsout in the edges thereof,

the plaster or stonemodel with the tinfoil burnished therein, i

. Fig. 6 is a similar view toFig. 5,.the Wax 40 plate carrying the teethhaving been applied thereto, i

Fig. 7 having been applied to the in'ner'andf outer sides around theteeth, i Sis a similar-view the 'waxqaround, the teeth smooth, o

-' Fig.9 is aside in 1 the vulcani-zing flask;

the invention is to pro;

or lower teeth or the partial, producea thin denture of'-ac-- I togive-a naturalfeeling i f. 10 the mouth of'the wearer or ana'ccurateden- NVith the a... and other 'objectsinyiefi;

the accompanying features thereof a plan VIBW of plaster: or

I v V of the,Wax;platei'emoved from the model and the palate thereofis aplan View of the tinfoil within-i Fig.5 is a longitudinal sectional,.';i.;..:or

is a plan view of the wax v has beenfmade 1 j 5 fgetlierfwith said plateand teeth inwatei elevation of Fig. S arranged for cooling same, andvwet cloth until smooth. f I

Fig. '10 is a plan View ofthe lower part Fig. 11 is palate, and Fig. 12'is atop P a a f The denture is} made inthe ordinary man- I Iner; tothegfinishing p tl1e' WaX or plaster impression, pouring the Imodel-,then making the wax. platetherefrom with teeth in position, andtrying in said-waxplate.

plaster or stone Said wax plate is no the 'vulcanizing flask, after; theupper part.

thereof-has been rem'ove :l, fi l a I a bottom pl fn view of the upper.part ofthe flask, after the Wax aronndthe 1 teethfhas been removed andvulcanizing rub her packed therearound 'andplaced in-thel an at arfinished co rocess, by first taking ingprocessjn accordance withthis'inven tion, which will now bedescribed,

,The first step consists inr'emoving the wax plaster o'r stone: model '2plate 1- from theand cutting out the palatez therefrom at 3, v,then-taking a;sheetflof'thintinfoil,for in- I stance sixty gauge-andfolding to, provide a plurality of, thicknesses. catedat 4, which isfirst smoothed out upon then out to proper size or a fiat surface, and

slightly larger than out out having a forward round ng end 1 plate: Land5, curved s'ides-6 and7, V

8, with opposite wedge or V; shapedincisions, 5

indicated by 9 out in forward rounding end ing saidpile of palatal,surface of the "ing same thereimarid then applying sticky margin of waxat 10 to the tinfoil forcementing itupQhitself indi- I palate 'of'wax'anda sqnare'rear end.

said side s,l and [in the as sho wm Next .placsheets of. tinfoile' -uponthe model 2 andv burnishthe last sheet of. seidfrile of infoil t0- theplaster orstone model 2. Instead of said tinfoil, twenty-eight gauge"casting waxmay beused. Next replacing the wax plate l;

" upon the model '2 with teeth 11 in position thereomthen applyingwax tothe inner and I outer margins ofsaid r H r p 1 saidteeth asindicated at12, and directlng to Fig. 6, after ahot gasflameupon said wax forsmoothing wax plateand around same' And'then dipping said model to- Thenext step is 1 fi ly] r bhi efw t clean said plate well by means ofabrush and of placing the plaster or 'stone model 2' with the wax plateland teeth 10 thereon in the lower part-13 of a Vulcani'zingfiask, whichhas been. filled-witl1 the usual amount of smooth plasterindicated at14. WVhen' the plaster 14 has set sufficiently, it-is trimmed at 15 evenwiththe flask oint, and the joint sur face painted with a solution ofsilica ofsoda "to permit ready separation-bf the-upper part 16.0f theflask from the lower part13 thereof as is the usualpractice. The upperpart 16 of the flas'kis placed in position, and there is poured thereinsmoothplaster about the consistency of whipped cream as indicated at 17.r The flask isvibrated gently during the setting of the plaster 17 toeliminate air bubbles After the pl-aSterl? is set sulficiently "in theupperpart: 16 of the flask, the

whole "flask 'isvheated and the upper part t-hereofjcarryingthe teethand wax plate is removed. F

" Next remove the tinfoil palate 4t from the model Qand thenjwash thewax 12 out from around the: teeth 11; using hot water with gold dust 'orsimilar powder therein, thus leaving-said;teeth inthex'plaster 17 0f theI upper part '16 ofthe flask. Sprinkleitalcum powder overthe innersurface of the palatal 1nodel2, and. rubzsaidsurface with drycotton-batten for smoothing same, thenrewash and dry said inner surfaceof said'palatal. *mbdel, all, the time keeping said palatal "model warm;Next "place v'ulca'nizing rub- "flask in'hotwater and leave thereinuntil her around. the teethin the ordinary man ner,\as indicated at 18,and then lay two strips of'sheet rubber Ill-and upon the palatal'surfaceas shown in Fig. 11. Place the upper part 16 0f the flask in positionupon the lower part 13 and placethe flask ma press, then immerse thepress holding the the Vulcanizing rubber 18, 19 and 20 is soft,

. 7 then apply pressure tosaidfiask and bolt the upper andlowerpartsthereof together while under pressure. Placethe fiaslmn avuloanizerat 31Q-degrees Fahrenheit for fifty min- Y ates,incieaselthe-heat to 3'20degrees and after forty 5 minutes remove the;flask from thevulcanizerand cool same in water; Re-' move the vulcanizedplate-from the flask, and

cold water.

s For dressing the vulcanized plate 21, first trim'the edges andvfront'thereof as usual,

, will be seenthat by this method,'vulcanite replacing said plate uponsaid model,

mg wax around sald teeth, placing said model dentures of slightlyvarying thicknesses as ClGSlIGd' and of accurate contour may be producedat a saving of cost of material and 1n p less time than the presentpractice.

; It will be understood that slight changes in the details of the methodof manufacturing dentures may be made within the scope of the claims. 7r I Having fully described my invention, 'what l-claim isz Y 1. A methodof producing dentures consisting'of taking impression, making model andwax plate therefrom, setting teeth upon said wax plate, removing saidwax plate and cutt ng out the palate therefrom, placing sheet tinfoilupon the palate of said model,

replacing said plate upon said model, applying wax around'said teeth,placing said model with wax plate and teeth'in aflask, pouring plasterin said flask, washing out said wax and wax plateand removing saidtinfoil and substituting therefor 1UbbG1,'flD d vulcanizing said rubber.

' 2. A method of producing dentures consisti'ng'of taking impression,making model and wax plate therefrom, setting teeth upon .said'waxplate,removing said wax plate and cutting out the palate therefrom, placingsheet tinfoil upon the palate of said model, replacing said plate uponsaid model, applying wax around said teeth, placing said model with waxplate and teeth in a flask, pour ng plaster 1n said flask, washlng outsaidwax 'and'wax plate and substituting therefor rubber, removingsaidtinfoil and substitutlng therefor a plurality of pieces of sheet'rubber, and vulcanizing said rubber.

3. A method of producing dentures consisting of taking impression,making-model and wax plate therefrom, setting teeth upon said wax plate,removing said wax plate and cutting out the palate therefrom, placingsheet tinfoil upon the palate ofsaid model,

replacing said plate upon said model,applying wax around said teeth,placing said model with wax plate and teeth in a flask, pouring plasterin said flask, washing out said wax and wax plate and substitutingtherefor rubber, removing said tinfoil and substituting therefor aplurality of'pieces of sheet rubber and heating said flask in aVulcanizer to 310 degrees for fifty minutes and then increasing theheatto 320 degrees fo'r forty minutes' I 4. A method of producing denturesconsisting of taking impression, makingmodel and wax plate therefrom,setting teeth upon said wax plate, removing said wax plate and cuttingout the palate therefrom, placing sheet tinfoil upon the palatev of saidpp ywith wax plate and teeth in a flask, pouring plaster in said flask.

washing out said wax and wax plate and "substituting therefor model,

rubber, removing said tinfoil and substitut- 1 ing therefor a pluralityof pieces of sheet; rubber, heating said flask in a vulcanizertof 310degrees for fifty minutes and then in-j creasing'the heats-to 320degrees for forty minutes, removing the vulcanized plate, trim'- mingand 'bur'ring said plate lightly,v

water.- 7 5 A method sisting of taking impression making modeland waxplatetherefrom, setting teeth upon V said wax plate, removing said'waxplate and cutting out the palate therefrom, placing.

sheet tinfoilupon the palate of said model, burnishing the sheet tinfoilwithin the palate of said model, cementing'the edges of-saidj f tinfoilto said model, replacing said wax f plate upon said model applying Waxaround said teeth, placing said 7 model [with] wax plate and teeth in aflask,'fillingsaidfflask with plaster, washing out saidwaxL-and waxplate and substituting'therefor rubber, removing said tinfoil from themodel and substituting therefor two'pieces of sheet-rubber,

and vulcanizing said rubber. 1

6. A method of producing dentures co nsisting of taking impression,making modeland wax plate therefrom, setting teeth upon said wax plate,removing-said wax plate and cutting out the palate therefrom, placing ai plurality ofsheets of tinfoil within the palatal cavity of saidimodel,applying-sticky waxto the edges of said sheets of tinfoil for cementlngsame to said modehreplacing said waxplate upon saidjmodehfapplying waxaround said teeth, placing said model with wax plate and-teeth in aflaslgfilling said flask with plaster, washing out said wax and waxplate and substituting therefor rubber, removing said tinfoil andsubstituting.therefor'two sheets of sheet rubber,-heatingthe j flask ina vulcanizer to vu-lcanizesaid rubber,

removing the vulcanized plate, trimming and burring' the plate lightl ad fi n Polishing Said plateg: 1 v

whereof I affix my signature.

v AMBROSE srRoE,

I In testimony and finally polishingsaid plate with pumice and i a ofproducing dentures con-

